Performance study of access control in wireless LANs—IEEE 802.11 DFWMAC and ETSI RES 10 Hiperlan
Mobile Networks and Applications - Special issue on channel access in wireless networks
Dynamic tuning of the IEEE 802.11 protocol to achieve a theoretical throughput limit
IEEE/ACM Transactions on Networking (TON)
Simulation Using GPSS
1 LANs: Saturation Throughput in the Presence of Noise
NETWORKING '02 Proceedings of the Second International IFIP-TC6 Networking Conference on Networking Technologies, Services, and Protocols; Performance of Computer and Communication Networks; and Mobile and Wireless Communications
Performance analysis of the IEEE 802.11 distributed coordination function
IEEE Journal on Selected Areas in Communications
Wireless Personal Communications: An International Journal
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IEEE 802.11 specifies a technology for wireless local area networks (LANs) and mobile networking. In this paper, we present an analytical method of estimating the saturation throughput of a 802.11 wireless LAN in the presence of noise, which distorts transmitted frames. With the Distributed Coordination Function (DCF) being the fundamental access mechanism in the IEEE 802.11 MAC protocol, sequential attempts to transfer by every station are separated by backoff intervals. Besides the standard backoff rule of the DCF, according to which the mean backoff interval is doubled after each failure in order to avoid collisions, we propose and study a modification of the backoff rule. This modification relies on the optional 802.11 tools to recognize a reason of a failure (collision or noise-induced distortion) and does not increase the mean backoff interval if a failure happens due to distortion by noise. In addition to the throughput, our method allows estimating a probability of a packet rejection occurring when the number of packet transmission retries attains its limit. The obtained numerical results of investigating 802.11 LANs by the developed method are validated by simulation and show high estimation accuracy for any values of protocol parameters and bit error rates. We adopt this method to tune the protocol parameters and to compare the proposed modification with the standard backoff rule.